Voir la notice de l'article provenant de la source Mathematicac Balkanica website
@article{MABA_1988_2_1_a0, author = {G. P. Nikolov}, title = {A {Comparison} {Theorem} in the {Theory} of {Quadrature} {Formulas}}, journal = {Mathematica balkanica}, pages = {3}, publisher = {mathdoc}, volume = {2}, number = {1}, year = {1988}, url = {http://geodesic.mathdoc.fr/item/MABA_1988_2_1_a0/} }
G. P. Nikolov. A Comparison Theorem in the Theory of Quadrature Formulas. Mathematica balkanica, Tome 2 (1988) no. 1, p. 3. http://geodesic.mathdoc.fr/item/MABA_1988_2_1_a0/